Last week's episode of Lostwas absolutely amazing, and I only hope that tomorrow night's "Something Nice Back Home" can keep the momentum going. It's a Jack-centric episode, and I must admit that I get a little bit nervous whenever it's time for the good doctor to take center stage. Sometimes we end up with something amazing like "Through the Looking Glass," and other times we end up with "Stranger in a Strange Land." Jack (Matthew Fox) is a great character, but the writers occasionally struggle to craft an intriguing story around him.

To get ready for tomorrow night's episode, we have some promo pics and an exciting clip from "Something Nice Back Home."

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The official ABC description of the episode, which was written by Edward Kitsis and Adam Horowitz, reads, "Kate (Evangeline Lilly) and Juliet (Elizabeth Mitchell) must learn to work together when Jack's health is seriously compromised, and something goes wrong as Sawyer, Claire, Aaron and Miles continue their trek away from Locke's camp and back to the beach."

In the first photo, we see Sawyer (Josh Holloway) with. . .a guitar? I'm not sure when the group will find time for campfire sing-alongs, but it looks like Sawyer has it covered.

The ABC promo for this episode made it seem like Jack may have a simple case of appendicitis. Is that all that's wrong with him, or is there more to it than that?

Hey look, Rose is back!

In this clip from the episode, Jack wakes up to find Bernard arguing with Faraday (Jeremy Davies) and Charlotte (Rebecca Mader). Jack promises everyone that he'll get them off the island, but he may not have the chance if he doesn't take care of what's ailing him.